Process of forming paper bottles.



w. H. FULCHER. PROCESS OF FORMING PAPER BOTTLES.

APPLICATION F|LED JUNE 1, 1915.

l 9 1 ?'Y, 1 78, Patented Mar. 28, 1916.

WILLIAM H. EULCHER, or OAKLAND, CALIFORNIA. 1

PROCESS OF FORMING PAPER BOTTLES.

mamas.

To all whom it may concern:

Be it known that I, l/VILLIAM H. FULCHER, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Processes of Form ing Paper Bottles, of which the following is a specification.

The object of the present invention is to provide an improved process of, and apparatus for, forming paper bottles.

In the present instance the invention is illustrated as in use for forming a paper milk bottle, but it may also In the accompanying drawing, Figure 1 is a vertical sectional view,- certain parts being shown in side elevation, of my improved apparatus; Figs. 2 and 3 are broken cross sections on the lines 2--2 and 3-3 respectively of Fig. 1.

Referring to the drawing, 1 indicates an open-topped tank for containing paper pulp,

extending upwardly from which tank is a pipe 2. Immediately above said pipe 2 is a pipe 3 in which is a valve 4, and leading to any suitable apparatus for producing suction. Screwed around the lower end of the pipe 3 is a circular hub 6 of a square plate 7, from which depend hangers 8, by

which is supported a smaller square plate.

9, at the corners of which are pivoted,v as shown at 11, mold sections 12, each section comprising horizontal and vertical ribs 13 and a facing 14 of wire mesh supported by said ribs. The vertical edges of each facing are bent back on themselves at an angle of about 45 and are supported by shoulders 16 on outer vertical ribs of each mold section.' By this means the edges of the facing receive sufiicient reinforcement to prevent their bending outward and no ridges are formed in the outer surface of the paper bottle. The mold sections are pressed toward one another to form a complete mold by any suitable means. which I have'herein shownas consisting of rods 17 actuated by hand or by any suitable mechanism, At the Specification of Letters fatent. Application filed .Tune 1,- 1915. Serial No. 31,434.

be used for forming other kinds of bottles;

racemes Mar. 2a, ieic.

corners of the plate 7 are bearings 18 to which are pivoted box sections 21,. which have inwardly extending portions 22 which fit tightly around the lowermost circular portions of the mold the neck of the mold. Said box sections are likewise pressed inward-toward each other to form a complete boxby means of rods 17 pivoted to their lower corners.

Suitable packing 24 is interposed between the several sections of the box to make airtight joints when said sections are pressed together. Double links 26 connect eachmold sectionwith the adjacent. box sections, so

that when the box section is drawn outward sufliciently the mold section also follows.

My improved process is as follows The valve 4 being closed, the mold sections are pressed together around'the top of the pipe 2 and the box sections are also pressed together and form an air-tight box, the mold being therewithin. The valve 4 is then opened, whereupon the air immediately rushes out of the box and from within the mold producing suctionof the pulp from the pulp tank into the mold, and drawing the waterof the pulp through the fine interstices of the wire mesh facing, while leaving the paper of the pulp on the inner surface of said facing, on which inner surface it forms a layer which varies in thickness according to the degree of suction and the length of time during which the suction isapplied. The valve 4 is now closed; the box' and mold are raised from the pipe 2; and the paper pulp within themold, and which does not adhere to the. wire facinq, drops back into the tank. The'box and mold are then removed. and the box sections are then separated, discharging the water there from, and the mold sections are then separated. discharging the paper bottle.

After the paper bottle has been molded as above described, it may be turned to a horizontal position, balls of marble, metal or other suitable material may be inserted, and'the bottle may be rolled with the balls therein, the effect of which will be to pro- ,sections, which form Ll-F; 1,177,17&

into said bottle, and then rolling the bottle 10 with the balls therein.

In testimony whereof I have hereunto set my hand in the presence of two subscribmg Witnesses.

WILLIAM H. FULCHER. Witnesses F. M. WRIGHT, D. B. RICHARDS. 

